[FFmpeg-cvslog] avcodec/speedhq: Replace always-true check by assert

[Andreas Rheinhardt]

ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt at outlook.com> | Sun Dec 12 15:10:10 2021 +0100| [7a5f7caee9ebd58a025bd804e89f33de9f217b2a] | committer: Andreas Rheinhardt

avcodec/speedhq: Replace always-true check by assert

Should fix Coverity tickets #1473572 and #1473504.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=7a5f7caee9ebd58a025bd804e89f33de9f217b2a
---

 libavcodec/speedhq.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavcodec/speedhq.c b/libavcodec/speedhq.c
index 91ba80ebd3..743dacc6ce 100644
--- a/libavcodec/speedhq.c
+++ b/libavcodec/speedhq.c
@@ -295,7 +295,8 @@ static int decode_speedhq_border(const SHQContext *s, GetBitContext *gb, AVFrame
         if (s->subsampling == SHQ_SUBSAMPLING_420) {
             dest_cb = frame->data[1] + frame->linesize[1] * (y/2 + field_number) + x / 2;
             dest_cr = frame->data[2] + frame->linesize[2] * (y/2 + field_number) + x / 2;
-        } else if (s->subsampling == SHQ_SUBSAMPLING_422) {
+        } else {
+            av_assert2(s->subsampling == SHQ_SUBSAMPLING_422);
             dest_cb = frame->data[1] + frame->linesize[1] * (y + field_number) + x / 2;
             dest_cr = frame->data[2] + frame->linesize[2] * (y + field_number) + x / 2;
         }